RANSOM_WIRA.A

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

However, due to errors in its code, it fails to perform its intended routine.

It encrypts files found in specific folders.

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Ransomware encrypts files with the following extensions:

• .txt
• .pdf
• .jpg
• .jpeg

It drops the following file(s)/component(s):

• %Desktop%\crypted_file.txt
• %Desktop%\test\tuanlinh.rar

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

However, due to errors in its code, it fails to perform its intended routine.

It does the following:

• It executes the following WinRAR command:
  • WinRAR -mt2 a -inul -IBCK -ace -p=1234 -m1 -logf=""C:\Users\Tuan Linh\Desktop\crypted_file.txt"" ""C:\Users\Tuan Linh\Desktop\test\tuanlinh.rar"" ""C:\Users\*\*.txt""

Ransomware Routine

This Ransomware encrypts files found in the following folders:

• %User Profile%

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

NOTES:

However, as of this writing, this ransomware is still under development.